>3f8nB (B:) observed residues (from ATOM records)
helkealetlketgvritpqrhaileylvnsmahptaddiykalegkfpnmsvatvynnl
rvfresglvkeltygdassrfdfvtsdhyhaicencgkivdfhypgldeveqlaahvtgf
kvshhrleiygvcqec